package com.zxc.demo4;

import com.zxc.demo2.entity.User;

import java.util.List;


/**
  * @author: zxc
  * @return:   
  * @time:  2021/5/17 20:50
  * @description: 
  */
public interface UserServices {

    void getUser();

    User getUserById(int id);

    List<User> getUserById(int id, String username);

    int addUser(User u);

    void updateUser(User u);

    int del(int id);

}
